Decker, along with Demaryius Thomas and new Broncos receiver Wes Welker are at Duke University in North Carolina this week working out with Manning before the official offseason program begins next week.

Decker posted a picture on Twitter that showed he owed Duke $3,217.50.

The expenses included $2,500 for on-field instruction from Duke Football coaching staff, $200 for taping and treatment and a $300 facility fee.